HydroBASINS lev08 watershed · #1080672470
Bassin de Gambia River
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 5 administrative regions across 2 countries : Fulladu West, Koungheul, Niamina East, Niani, Nianija
Sub-basin area
410,3km²
Upstream area
60 394,5km²
Discharge
150,52m³/s
Mean elev.
19m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Gambie1144 km²
- Bassin de Pallan Bolon1078 km²
5 dept-equivalent regions (GADM L2)
- 189.1 km²46.3% of basin
- 114.7 km²28.1% of basin
- 103.1 km²25.2% of basin
- 1.3 km²0.3% of basin
- 0.4 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
442 distinct species · 16 091 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Gambia River : 19 espèces reliées par 20 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
27,7°C
Annual rain
695mm
Moisture idx (CMI)
-0,67
Runoff
44mm/an
PET
2 079mm
AET
586mm
Mean slope
0,5°
Water table
83cm
Forest
0%
Crops
20%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)